Building Materials Reuse Association:Provides info on best practices, past conference presentations, and tips and techniques to reuse materials.

US Green Building Council (USGBC): Non-profit organization working to promote buildings that are environmentally responsible, profitable and healthy places to live and work. Authors of the LEED (Leadership in Energy and Environmental Design) building certification.

Green Building Initiative: Another non-profit organization working to accelerate the adoption of green building practices. Offers an alternative to LEED certification.

Greener Building: An overview of the world of greener buildings.

Green Building: Another web site that provides information on green building.

Building Green: Publisher of the GreenSpec® Directory and Environmental Building News; provides environmental building news.

Sustainable Design Forum: News and resources for sustainable design in architecture, development and construction.

Green Label: Certification that carpet and adhesives is low in chemicals (volatile organic compounds, or VOCs).

Whole Building Design Guide: Provides information on integrated 'whole building' design techniques and technologies

Rocky Mountain Institute:Information on green building and sustainable development including case studies.

Efficient Windows Collaborative: Provides information on how to choose energy-efficient windows.

Energy Efficient Building Association: Promotes energy-efficient and environmentally responsible buildings and communities; aimed at residential design and construction industry professionals.